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Publication numberUS3649767 A
Publication typeGrant
Publication dateMar 14, 1972
Filing dateJul 16, 1969
Priority dateJul 16, 1969
Also published asDE2035386A1, DE2035386B2
Publication numberUS 3649767 A, US 3649767A, US-A-3649767, US3649767 A, US3649767A
InventorsKaneyasu Hiroshi, Lovell Clarence A, Maruyama Yasushi, Muroga Ko, Okuda Jiro, Shimasaki Nobuhiko, Sohma Kikuya, Terashima Toshio
Original AssigneeNippon Electric Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Automatic telephone system activated by stored programs and including circuits to indicate busy-idle states of system components
US 3649767 A
Abstract
In a system of the space division, stored program type for telephone use, state circuits are connected with subscriber's line circuits, trunk circuits, links and command execution wired logics. Each state circuit supplies to the wired logics a signal representative of the instant operational state of the connected line circuit, trunk and link and receives therefrom a signal representing that the wired logics have processed the state signal. A rotating magnetic memory is used as the central memory device. Also, a pair of central controllers may be provided to operate in the reversed operational modes of call processing and link setting at the same time.
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Description  (OCR text may contain errors)

United States P? atent Muroga et al.

Mar. 14, 1972 Primary Examiner-Kathleen H. Claffy Assistant ExaminerThomas W. Brown Attorney-Mam & J angarathis SYSTEM COMPONENTS [72] Inventors: K Muroga; Jiro Okuda; Nobuhiko [57] ABSTRACT Shimasaki; Toshio Terashima; Yasushi Maruyama; Hiroshi Kaneyasu; Kikuyu i gs hgg z ss Japan; Clarence In a system of the space division, stored program type for telephone use, state circuits are connected with subscribers [73] Assignee: Nippon Electric Company, Limited, line circuits, trunk circuits, links and command execution Tokyo-t0, Japan wired logics. Each state circuit supplies to the wired logics a [22] Filed: July 16, 1969 signal representative of the instant operational state of the connected line circuit, trunk and link and receives therefrom a [21] Appl' 842095 signal representing that the wired logics have processed the state signal. A rotating magnetic memory is used as the central [52] US. CL ..l79/18 ES memory device. Also, a pair of central controllers may be provided to operate in the reversed operational modes of call [58] Field of Search ..179/18 ES, 18 E, 18 FF processing and link setting at the same time.

[56] References Cited 11 Claims, 77 Drawing Figures UNfiEfiTATE'STATENTS 3,487,173 12/1969 Duthie et al ..l79/l8 ES /50 N 0 cav 752,44 CO/VTKOALER M 1 I50 i I ((1 J'A/NF /o Isa/ e Sm/m I :1 l "Am: 172 r L '7, CA4! AM, TH 6222 I COMMAWD (aw/20L J ,7, 'Y l WW6)? are/6 Mu WA 5/! 48k CONT"! //vs7' CF 77 A V W 06! rc INST ,7 at Ext-(07y m 6/6 TC W4 W5" I ME I W r IMSTRUCT/OA/ 1 13= 5:5 1 6 1966 H F EXECI/T/OA/ SINF I V M Ian Cl- COM- Mama/5 f -@3- I 4 M15 k Sm 7 2 Mam W4 i V COMMON I 15 #3 7242/58 flak 7kz Mm r I W- 5/4 "'1 A1? [Rem M gJ-T) 047A {fWREGTCKKEG F 1 J j 96 I rea Tl 99 A 'Th RA rsa'l Mrmum (c1| aw SHEET UlOF 32 INVENTORS K. Muroga, J. Okudo, N. Shimasuki, T. Terclshimu, Y. Maruyumo, H. Koneyuau, K. Sohmu and C. A. Lovell 7/Za/lm &

ATTORNEYS PATENTEDMA. .4 I972 PATENTEDIMR 14 1972 SHEET OEUF 32 INVENTORS K. Muroga, J. Okudo,

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ATTORNEYS PATENTEDMAR 14 1972 3, 649,767

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ATTORNEYS PATENTEDHAR14 I972 3 649 7 6 7 SHEET lDUF 32 Iss1 INVENTORS K. Murogu, J. Okudo, N. Shimosoki, T. Terashimcl, Y. Muruyomu, H. Kaneyusu, K. Sohmo and C. A. Lovell v BY 77ZaJ /n 3W ATTORNEY S PATENTEDMAR 14 I972 SHEET 120F 32 INVENTORS K. Murogu, J. Okudu, N. Shimosuki, T. Tarushimc, Y. Moruyamo, H. Kcmeyosu, K. Sohmu and C. A.' Lovell PATENTEDMAR 14 1972 3, 649 767 SHEET 1 HF 32 INVENTORS K. Murogu, J. Okuda, N. Shimosuki, T. Terashimu, Y. Muruyomo, H. Kaneyosu, K. Sohmu and C. A. Level BY 77lam&

ATTORNEYS

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3487173 *Jul 15, 1966Dec 30, 1969Automatic Elect LabSmall exchange stored program switching system
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3903374 *Jan 9, 1974Sep 2, 1975Stromberg Carlson CorpControl system for electronic PABX switching matrix
US3943297 *Jan 9, 1974Mar 9, 1976Stromberg-Carlson CorporationElectronic private automatic branch exchange
US3963874 *Jan 22, 1975Jun 15, 1976Stromberg-Carlson CorporationBusy-test arrangement for electronic private automatic branch exchange
US4095054 *Jan 27, 1976Jun 13, 1978Societe Francaise Des Telephones EricssonElectronic telephone switching system of the stored program type comprising two active stages and one passive stage
US5321836 *Apr 9, 1990Jun 14, 1994Intel CorporationVirtual memory management method and apparatus utilizing separate and independent segmentation and paging mechanism
US7769157 *Jul 19, 2001Aug 3, 2010AlcatelMethod of providing the facility for some communication network users to have preferential access for particular calls
US20020018552 *Jul 19, 2001Feb 14, 2002AlcatelMethod of providing the facility for some communication network users to have preferential access for particular calls
Classifications
U.S. Classification379/279, 379/32.4, 379/280
International ClassificationH04Q3/545
Cooperative ClassificationH04Q3/54533
European ClassificationH04Q3/545C3